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Metagenomic insights into the impact of tillage practices on soil nutrient cycling and wheat yield

Science of the Total Environment 2025年 978卷 179427页

作者： Wang, Hao Yang, Qinghua Wang, Shulan College of Agronomy Henan Agriculture University Henan Zhengzhou450046 China College of life science Henan Agriculture University Henan Zhengzhou450046 China Key Laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Zhengzhou450046 China

Decreasing tillage intensity (DT) are beneficial for soil health and crop yield;however, the relationship between microbial nutrient cycling function and crop yield remains poorly *** objective of this study was to investigate the impact of tillage practices of conventional tillage with rotary tillage (RT) and decreasing tillage intensity (DT) on the soil microbial community and the functions of carbon, nitrogen, and phosphorus cycles of wheat and examine the relationship between soil microbes and yield based on a four year field experiment. An increased maize yield of 9.3 % and 8.5 % in DT compared with that in RT in 2023 and 2024, respectively. Further analysis reveals that DT influences the availability of soil carbon, nitrogen, and phosphorus by altering microbial communities and their functions. Microbial function analysis indicates that DT leads to higher abundances of genes associated with glgP (starch degradation) and xynB (hemicellulose degradation), which play a crucial role in elevating POC levels (11.6 %–23.4 %). Additionally, DT shows increased abundances of genes related to organic nitrogen metabolism (glnA), nitrification (amoB), and nitrogen fixation (nifK), contributing to the rise in NO3−- N content (19.1 %–31.1 %). Furthermore, DT exhibits a high abundance of the organic phosphorus mineralization gene phnM, resulting in enhanced AP content (4.7 %–25.4 %). Moreover, among the microbial genera significantly influenced by DT, ten genera—Lysobacter, Luteimonas, Bradyrhizobium, Aromatoleum, Acidibacter, Variovorax, Polaromonas, Pseudorhodoplanes, Piscinibacter, and Ramlibacter—show increased abundance, positively impacting wheat yield. Our study offers a novel framework for comprehending the enhancement of wheat yield through the lens of microbial nutrient cycling functionality and mining of beneficial bacteria for wheat yield. © 2025 Elsevier B.V.

关键词： Conservation tillage Microbial function Wheat Yield

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Harnessing Magnetic Fields to Improve Wheat Yield: Field Studies in China

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SSRN 2024年

作者： Zhang, Yinglei Guo, Jiameng Wang, Yongchao Shao, Ruixin Yang, Qinghua Wang, Hao College of Agronomy Henan Agriculture University Henan Zhengzhou450046 China Engineering Research Center for Crop Chemical Regulation Henan Zhengzhou450046 China Key Laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Zhengzhou450046 China

Magnetic fields, as a form of physical energy, exert an influence on biological activities. However, our current understanding of the impact of magnetic fields on wheat yield remains limited. In this study, our objective was to investigate the effects of magnetic field treatment of wheat plants on their yield, root growth, absorption of nitrogen and phosphorous and soil bacterial diversity. The experiments were conducted at two agricultural research stations in China, Zhengzhou and Xuchang. Plants were treated with magnetic field of 20, 40, 60, and 80 mT induced by permanent magnets for chronic exposure. Untreated plants were considered as controls. Several parameters were measured, including soil nutrient availability, soil bacterial diversity, wheat root morphology and ultrastructure, wheat dry matter accumulation, wheat nitrogen and phosphorus absorption, and wheat yield. Magnetic field treatments of 40 and 60 mT significantly increased the wheat plant yield with increases of 13.8% and 15.27% at the Zhengzhou site and 19.2% and 17.7% at the Xuchang site compared to the control plants respectively. Analysis of soil nutrient availability demonstrated that when the magnetic field intensity reached 60 mT, there was a significant increase in nitrate nitrogen, ammonium nitrogen and available phosphorus content in rhizosphere soil compared to the control, showing increases of 21.4%, 33.7%, and 10.4% in Zhengzhou. Alterations in bacterial abundance were significantly correlated with changes in the chemical properties of the soil. Our structural equation modeling (SEM) analysis showed significant relationships within the system. Soil nutrients were found to have a substantial impact on wheat nitrogen and phosphorus absorption, and wheat nitrogen and phosphorus absorption significantly affected wheat yield. The change in soil nutrient content was caused by the change in soil bacterial community diversity and abundance, and increased soil nutrients increased wheat yield. Th

关键词： Soils

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Metagenomic insights into microbial variation and carbon cycling function in crop rotation systems

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Science of the Total Environment 2024年 947卷 174529页

作者： Zhang, Yinglei Chen, Jinping Du, Mingxue Ruan, Yihao Wang, Yongchao Guo, Jiameng Yang, Qinghua Shao, Ruixin Wang, Hao College of Agronomy Henan Agriculture University Henan Zhengzhou450046 China Shangqiu Station of National Field Agroecosystem Experimental Network Henan Shangqiu476000 China Key Laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Zhengzhou450046 China Engineering Research Center for Crop Chemical Regulation Henan Zhengzhou450046 China

The decomposition and utilization of plant-derived carbon by microorganisms and carbon fixation are crucial pathways for enhancing soil organic carbon (SOC) storage. However, a gap remains in our understanding of the impact of microorganisms on the decomposition of plant-derived carbon and their capacity for carbon fixation in crop rotation systems. Based on a 12-year experiment with wheat–maize (WM), wheat–cotton (WC), and wheat–soybean (WS) rotations, the microbial communities and carbon cycle function were investigated. The results indicated that WS rotation significantly increased SOC content compared to WM and WC. In addition, a significant increase was observed in microbially available carbon and microbial biomass carbon in the WS soil compared with those in the others. Further analysis of the microbial community factors that influenced SOC content revealed that WS rotation, in contrast to WM rotation, enhanced the diversity and richness of bacteria and fungi. Analysis of microbial carbon decomposition functions revealed an increase in starch, lignin, and hemicellulose decomposition genes in the WS soil compared to the others. The changes in carbon decomposition genes were primarily attributed to six bacterial genera, namely Nocardioides, Agromyces, Microvirga, Skermanella, Anaeromyxobacter, and Arthrobacter, as well as four fungal genera, namely Dendryphion, Staphylotrichum, Apiotrichum, and Abortiporus, which were significantly influenced by the crop rotation systems. In addition, microbial carbon fixation-related genes such as ACAT, IDH1, GAPDH, rpiA, and rbcS were significantly enriched in WS. Species annotation of differential carbon fixation genes identified 18 genera that play a role in soil carbon fixation variation within the crop rotation systems. This study highlights the impact of crop rotation systems on SOC content and alterations in specific microbial communities on carbon cycle function. © 2024 Elsevier B.V.

关键词： Genes

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Reducing Greenhouse Gas Intensity with a Mixture of Controlled-Release Nitrogen and Common Urea Combining Suitable Maize Varieties in the Summer Maize System

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SSRN 2023年

作者： Ma, Mengjin Wang, Yongchao Li, Huan Song, Miaomiao Zhang, Yihan Wang, Hongfei Zhu, Yiming Wang, Hao Shao, Ruixin Guo, Jiameng Yang, Qinghua College of Agronomy Henan Crop Chemical Control Engineering Research Center Henan Agricultural University Henan Zhengzhou450046 China College of Agronomy State Key laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Agricultural University Zhengzhou450046 China Beijing GAGO Ltd. Beijing10085 China

One-time application of normal urea (Urea-N) and controllable released nitrogen (CRU-N) is considered to be a useful tool for increasing nitrogen use productivity, grain yield, and reducing greenhouse gas (GHG) emissions in summer maize in intensive agricultural systems. Nevertheless, the trade-off between the economic and environmental performance of different blended fertilizers (BF) treatments in the different maize varieties remains unclear. Hence, a consecutive two-year field method was conducted in the North China Plain (NCP) to study the impact of different CRU-N: Urea-N ratios on the yield, nitrous oxide (N2O) emissions, yield-scaled total N2O emissions, the greenhouse gas intensity (GHGI) and the net ecosystem economic benefit (NEEB) in 2021 and 2022. Four CRU-N: Urea-N ratios, namely, 1:0 (N180U), 1:2 (N180C1), 2:1 (N180C2), 0:1(N180C) under 180 kg N ha-1, and two maize varieties (JNK728-yellow ripe variety and ZD958-green ripe variety) were used. The results showed that the treatments N180C1 and N180C2 produced the highest grain yield in the varieties JNK728 and ZD958 (9.4-11.5 t ha−1and 9.0-11.0 t ha−1), respectively. After optimizing the nitrogen source, BF treatments reduced GHGI (47%-57%) and increased NEEB (13%-17%) in both varieties compared to the N180U and N180C treatments. Furthermore, N180C1 and N180C2 reduced GHGI (63%-75%, 19%-20%) and increased NEEB (19%-20%, 8%-12%) in the varieties JNK728 and ZD958, respectively. The study concluded that a one-time application of BF on suitable varieties can minimize GHG emissions and maximize net economic benefits, and is a useful tool for balancing the yields and benefits of the summer maize production system in the North China Plain. © 2023, The Authors. All rights reserved.

关键词： Urea

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Reducing Greenhouse Gas Intensity with a Mixture of Controlled-Release Nitrogen and Common Urea Combining Suitable Maize Varieties in the Summer Maize System

SSRN

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SSRN 2023年

关键词： Urea

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Reducing Greenhouse Gas Intensity with a Mixture of Controlled-Release Nitrogen and Common Urea Combining Suitable Maize Varieties in the Summer Maize System

SSRN

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SSRN 2023年

作者： Ma, Mengjin Wang, Yongchao Li, Huan Song, Miaomiao Zhang, Yihan Wang, Hongfei Zhu, Yiming Wang, Hao Shao, Ruixin Guo, Jiameng Yang, Qinghua College of Agronomy Collaborative Innovation Center of Henan Grain Crops Henan Agricultural University Henan Zhengzhou450046 China College of Agronomy State Key laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Agricultural University Zhengzhou450046 China Beijing GAGO Ltd. Beijing10085 China

One-time application of common urea (Urea-N) blended with controlled-release nitrogen (CRU-N) has been considered to be an effective strategy to improve nitrogen use efficiency, grain yield and reduce greenhouse gas (GHG) emission of summer maize in the intensive agriculture system. Nevertheless, the trade-off between the economic and environmental performance of different blended fertilizers (BF) treatments in the different maize varieties remains unclear. Hence, a consecutive two-year field experiment was conducted in the North China Plain (NCP) to study the effect of different CRU-N: Urea-N ratios on the yield, nitrous oxide (N2O) emissions, yield-scaled total N2O emissions, the greenhouse gas intensity (GHGI) and the net ecosystem economic benefit (NEEB) in 2021 and 2022. Four CRU-N: Urea-N ratios, namely, 1:0 (N180U), 1:2 (N180C1), 2:1 (N180C2), 0:1(N180C) under 180 kg N ha-1, and two maize varieties (JNK728-yellow ripe variety and ZD958-green ripe variety) were used. The results showed that the treatments N180C1 and N180C2 produced the highest grain yield in the varieties JNK728 and ZD958 (9.4-11.5 t ha−1and 9.0-11.0 t ha−1), respectively. After optimizing the nitrogen source, BF treatments reduced GHGI (47%-57%) and increased NEEB (13%-17%) in both varieties compared to the N180U and N180C treatments. Furthermore, N180C1 and N180C2 reduced GHGI (63%-75%, 19%-20%) and increased NEEB (19%-20%, 8%-12%) in the varieties JNK728 and ZD958, respectively. The study concludes that a one-time application of BF in the suitable varieties can minimize GHGI and maximize NEEB, an effective strategy to balance the yield and efficiency in the summer maize system in North China Plain. © 2023, The Authors. All rights reserved.

关键词： Urea

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Impact of Microplastic Particle Size on the Physiological and Biochemical Properties and Rhizosphere Metabolism of Zea Mays L.: Comparison in Different Types of Soil

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SSRN 2023年

作者： Zhang, Yihan Song, Miaomiao Zhu, Yiming Li, Huan Zhang, Yinglei Wang, Gaofeng Chen, Xinping Zhang, Wushuai Wang, Hao Wang, Yongchao Shao, Ruixin Guo, Jiameng Yang, Qinghua College of Agronomy Collaborative Innovation of Henan Grain Crops Henan Agricultural University Zhengzhou450046 China College of Resources and Environment Academy of Agricultural Science Southwest University Chongqing400700 China College of Agronomy State Key laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Agricultural University Zhengzhou450046 China

The impact of microplastics (MPs) on plant growth has received increasing attention. This study explored the potential toxicity of MPs of different particle sizes on the growth of maize (Zea mays L.) in two soil types. The results showed that the harm caused by small MPs on maize growth was greater than that caused by large MPs. Both MP sizes resulted in a high level of superoxide anions in maize roots, which resulted in an increase in the area of root aerenchyma and reduced the metabolic activity of maize roots. Metabolomics showed that MPs exposure affected multiple amino acid metabolic pathways, including phenylalanine and tyrosine metabolism, and inhibited lignin biosynthesis in roots. In different soil types, low concentrations of MPs showed no significant effect on the growth of maize;however, significant differences were seen in the dry matter of maize seedlings at higher concentrations. This study provides a theoretical basis for a more comprehensive assessment of the impact of microplastic pollution on agricultural production. © 2023, The Authors. All rights reserved.

关键词： Lignin

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Dynamic Interplay Among Soil Nutrients, Rhizosphere Metabolites, and Microbes Shape Drought and Heat Stress Responses in Maize

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SSRN 2023年

作者： Yuan, Ao Kumar, Saini Dinesh Wang, Haotian Yang, Hanxing Chen, Meiyu Impa, Somayanda Wang, Hao Guo, Jiameng Wang, Yongchao Yang, Qinghua Liu, Xiaojun A. Jagadish, Krishna S.V. Shao, Ruixin Henan Engineering Research Center of Crop Chemical Control State Key laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education College of Agronomy Henan Agricultural University Zhengzhou450046 China Department of Plant and Soil Science Texas Tech University LubbockTX79409 United States Institute for Environmental Genomics Department of Microbiology and Plant Biology University of Oklahoma NormanOK United States

The frequent occurrence of extreme weather has brought forth significant challenges to the future development of agriculture, and it is imperative to enhance crop resilience to extreme environments. Soil microbial diversity and rhizosphere metabolites have a vital function in the response of plants to abiotic stresses, but their interaction to promote this response remains unclear. In this study, the 16S rRNA gene, non-targeted metabolomics, and internal transcribed spacer were examined to characterize the variations in rhizosphere microbial diversity and metabolites under drought (DS), heat (TS), and combined drought and heat stress (DTS). We found that DTS significantly reduced aboveground and root biomass compared to either drought or heat stress, with an increasingly pronounced effect observed over time. Under DTS, while Chytridiomycota and Actinomycetota had the highest relative abundances, Gemmatimonadota had a greater relative abundance in contrast to when exposed to either DS or TS. When exposed to TS in contrast to the other two treatments, the Basidiomycota relative abundance became significantly elevated. Metabolites, consisting of phenol ethers, fatty acyls, organooxygen compounds, allyl-type 1,3-dipolar organic molecules and organic nitro compounds, were differentially abundant across different treatments. Pathway analysis highlighted the down-regulation of ABC transporters, penicillin/cephalosporin biosynthesis, and valine/leucine/isoleucine biosynthesis pathways when exposed to either drought or heat compared to combined stress. Overall, these findings suggest that TS would stimulate the secretion of L-valine by the roots, thereby facilitating the recruitment of Gemmatimonadota and improving nitrate and ammonium absorption by roots under DTS. In brief, the results offer significant insights on the interactions between microbes and plants and the means to harness beneficial microbial communities to enhance maize resilience and productivity under differ

关键词： Metabolites

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Zmdwf1 Regulates Leaf Angle in Maize

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SSRN 2022年

作者： Cao, Yingying Dou, Dandan Zhang, Dongling Ren, Zhenzhen Su, Huihui Sun, Chongyu Hu, Xiaomeng Bao, Miaomiao Zhu, Bingqi Liu, Tianxue Chen, Yanhui Ku, Lixia State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural University Guangzhou China College of Agronomy National Key Laboratory of Wheat and Maize Crop Science Key Laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Agricultural University No. 15 Longzihu University Park Zhengdong New Area Henan Zhengzhou450046 China Henan Academy of Agricultural Science Henan Zhengzhou450002 China

Leaf angle (LA) is a critical agronomic trait enhancing grain yield under high-density planting in maize. A number of researches have been conducted in recent years to investigate the quantitative trait loci/genes responsible for LA variation, while only a few genes were identified through map-based cloning. Here we cloned the ZmDWF1 gene through map-based cloning, which encodes Δ24-sterol reductase in the brassinosteroids (BRs) biosynthesis pathway. Overexpression of ZmDWF1 resulted in enlarged LA, indicating that ZmDWF1 is a positive regulator of LA in maize. To reveal the regulatory framework of ZmDWF1 , we conducted RNA-Sequencing and yeast-two hybrid (Y2H) screening analysis. RNA-Sequencing analyzing results indicate ZmDWF1 mainly affect expression level of genes involved in cell wall associated metabolism and hormone metabolism including BR, gibberellin, and auxin. Y2H screening with Bi-FC assay confirmed three proteins (ZmPP2C-1, ZmROF1, and ZmTWD1) interacting with ZmDWF1. We revealed a new regulatory network of ZmDWF1 gene in controlling plant architecture in maize. © 2022, The Authors. All rights reserved.

关键词： Genes

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Combined Mercury and Water Deficit Stress Reduces Photosynthetic Efficiency But is Alleviated by Brassinosteroids

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SSRN 2022年

作者： Shao, Ruixin Tang, Yulou Zhang, Junjie Wang, Lijuan Wang, Hao Long, Haochi Yang, Liuyang Li, Gengwei Guo, Jiameng Wang, Yongchao Li, Yuling Yang, Qinghua Shi, Weiyu National Key Laboratory of Wheat and Maize Crop Science Key Laboratory of Regulating and Controlling Crop Growth and Development Ministry of Education Henan Agricultural University Henan Zhengzhou450046 China Xinxiang Grain Oil and Feed Product Quality Supervision and Inspection Institute Xinxiang453000 China Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing400715 China

This work was conducted for assessing the adaptive mechanism and response of maize to combined Hg and WD stress using two maize cultivars, Xianyu (XY) 335 and Yudan (YD) 132. The analysis was based on plant growth, physiological function, and transcriptomic data. Compared with the single Hg stress, Hg accumulation in whole plant and translocation factor (TF) under Hg+WD were increased by 64.51% (1.44 mg kg -1 ) and 260.00%, respectively, for XY 335;and 50.32% (0.62 mg kg -1 ) and 220.02%, respectively, for YD 132. Combined Hg and WD stress further increased the reactive oxygen species accumulation, aggravated the damage of the thylakoid membrane, and decreased chlorophyll content compared with single stress. Furthermore, transcriptome analysis revealed that most of down-regulated genes were enriched in photosynthetic-antenna proteins, photosynthesis, chlorophyll and porphyrin metabolism pathways ( PsbS1, PSBQ1 and FDX1 etc.) under combined stress, reducing light energy capture and electron transport. However, most genes related to the brassinosteroids (BRs) signaling pathway were up-regulated under Hg+WD stress. Correspondingly, exogenous BRs significantly enhanced the maize tolerance to stress by decreasing Hg accumulation and TF, and raising activities of antioxidant enzyme, photosynthetic efficiency, and the content of chlorophyll. © 2022, The Authors. All rights reserved.

关键词： Photosynthesis

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